Shuttle.



Patented July 3, |900.

No. 653,|4a.

E. 4LDFIELII.`

. S H U TT L E. 4 (Application med sept. 80,1899.)

(No Model.)

W/ TNE SSE S ATTORNEY.

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EDW'IN OLDFIELD, OF NORWICI-I, CONNECTICUT.

SHUTTLE.

y SPECIFICATION forming part of `Letters Patent No, 653,148, dated July 3, 1900. f

l Application filed September 30, 1399. Serial No. 732,176. (No model.)

T0 all wiz/0m it may concern:

Be it known that I, EDWIN OLDFIELD, a citizen of the United States, residing at Norwich, in the county of `New London and State of Connecticut, have invented certain new and useful Improvements in Shuttles, of which the following is a full, clear, and exact description.

This invention has for its object the improvement of the shuttles and coacting shuttle-races of narrow-fabric looms with a View to reducing thesize of the shuttles, so that the smallest possible shed on the warp-threads is obtainable; and it'also aims to simplify the construction, and thus reduce the cost ot'` such shuttles. I-Ieretofore it has' been most common in this class of shuttles to form grooves in the opposite sides of the back por tion, which grooves engage and travel on ixed ribs or ways that are mounted on the batten. At the base of one of the said grooves there is usually a toothed rack that is driven by pinion-gears in the batten in such manner that a reciprocating movement is imparted to the shuttle. This old construction cuts away and weakens the back of the shuttle, besides being more or less diicult to produce cheaply, and my present improvements are designed to overcome this ditculty in a prac tical and cheap way, as I shall explain.

I have illustrated my improvements in the accompanying drawings.

Figure l is a side elevation of a portion of a narrow-fabric-loom batten having mounted thereon suitable shuttle-supportin g races and having also supported in the said races a shuttle of my newly-improved form. Fig. 2 is a cross-sectional View of Fig. l on line l l. Fig. 3 is an enlarged detached View ot' my said shuttle, and Fig. 4. isa cross-sectional view of the same on line 3 3 of Fig. Fig. 5 is a View of said shuttle from the back side. Fig. 6 is a central sectional view ot' one half of the shuttle, explaining particularly the manner of chambering the sameto receive the various parts. In Fig. 7 I have illustrated that por-- tion of the shuttle-body that receives and 'supports the angular end of the Wire on which the quill revolves.

My shuttle is made of two parts-to wit, the body-section and the back-section-the body-section being arranged to receive and Fig. 6 of the drawings.

is revolubly mounted.

support the quill or bobbin that carries the iillingethread and having also suitable tension devices for controlling the delivery of the filling. The back-section has formed thereon peculiarly-arrangedI ways, and has also the rack by means of which the shuttle is driven, asIhave already brieflymentioned. The bod y-section I cast of aluminium or other light metal that can be readily cored to provide the several necessary chambers for the reception of. the tension-springs, the quillsupporting wire, dac., and when thus produced I find in practice that it is only necessary to polish the exposed parts of the said bodybeforeV joining it to the back, noitting being necessary. The back-sectionI also produce, preferably, of cast aluminium, although it may be made of vulcanized fiber or even of wood.

denotes the body-section, and b the back-section, the body beingformed as a bow that provides an opening of sufficient size to receive the quill, (which. latter is indicated by the letter o.) The bow Vportion a is cored in the operation of molding to provide cham-` bers a2, in which may be located tensionsprings d, oneend of each spring being se `cured to the back b and the opposite orI free `end being provided with aV ring d', through which the Iilling is threaded. The chambers thus provided form housings to protect the springs.

at and a5 denote bridges Athat are integral with the bow a and extend from side to side of the shell of the latter, as is best seen in The bridge a4 is formed with a hole a6, in which is a spiral spring g, and the bridge a5 has a slot al extending outward from its center, the said hole `and, slot being of a size suitable to receive the opposite ends of the wire h, on which the quill Said wire has one of its ends bent at a right angle to the main or body portion, as seen in the drawings. In assembling the parts the straight end of the Wire is tirst entered in the hole as and the an gle at the opposite end is then pressed into the slot al, the spring g meanwhile yielding as the Wireenters the said hole. The spring then exerts sucient force to prevent the ac cidental displacement of the wire.

ing the hole d'6, I form an eye or loop on the I inner end of the said spring and then drive a pin g through a hole in the bridge 0.4 andl through the said eye. This construction allows the spring to be compressed freely, but.` prevents the accidental displacement of said spring. Should it be desired to remove the spring to repair it or for any other purpose, f

it is only necessary to drive out the pin g', when the spring will drop out of the hole. I

preferably solder or otherwise Isecure to the outer end of the spring a cap or disk g2, so i that when the wire h is inserted in hole a6 it will have no tendency to spread the spring and cause it to bind in the hole. Bridges d8 are also provided in the body a adjacent to thedescribed bridges a4 a5, the opening at the rear of `each bridge d8 being of such size that the spring d'may pass freely therethrough, bu-t not `large enough to receive the rings d'. (See Fig. 6.) Said bridges 0,8 thus serve to guide the springs and also toretain the rings in position where vthey maybe readily grasped when .it is desi-red to thread the shuttle.

Any suitable tension device or drag may be `provided to prevent the quill from rotating too freely. As here shown, the said drag consists of a wire 7s, mounted in the opposite ends of the body a., near the back-section h, and having a spring-controlled radial arms 7c', whose free end bears against `the quill; but this particular device lforms no` part of my present invention.

The back-section bof my improved shuttle is secured to the body-section by rivets or screws m and is formed at its opposite edges with ribs h b2, that extend beyond the bodysection and serve, in connection with ycorresponding grooves s s inthe hatten, as ways to guide the shuttle-as it travels forward and backward in the sa-id batten. The way b is offset from the inner face of the back-section, thus prov-idingan angle b5, which serves when the back and body are being assembled as a stop and guide to properly locate the back on the body, and also serves in the finished shuttle as a retaining-rib to keep the two parts at all times in proper relation to each other. This particular form of back locates the guide-rib b well inward-that is to say, toward or overlapping the body-section-and makes it practical to cut away the adjacent outer portion of the back, so that the rack b4 may be located very close to the body-section. I am thus able to narrow up the shuttle materially, and by so doing a'considerably-less harness action and consequent shed `on the warp is necessary.

In casting the body-section a I provide two or more stud-like projections a' on the ends that are to abut the back-section, and when finishing .the said back section I provide therein holes that register with and receive the said projection ct. The backs are finished in jigs, so that they are all alike, and I am thus able to assemble the two parts of the shuttle and secure them together with practically no fitting of the parts.

Lugs 01,9 are cast on the body a, and said lugs are drilled to receive the screws or rivets m, by means of which two shuttle parts are secured together. (See Fig. 6.)

The raceways in which the described shuttle travels consist of grooves s s', formed in vthe batten n,'these grooves being offset from each other to correspond with the offset ribs b b2 on the shuttle-back, and it will be noticed that when the shuttle Vis mounted in the grooves s s the lower rib h' is located very near the `gravity center of the shuttle and bears the major part of the weight of '-the shuttle, thus overcoming in a large degree the friction resistance that is always present in shuttles that are supported at or near the extreme edge of the back-section.

My described shuttle has the desirable advantages of light weight and cheapness of construction, and I also find in practice that they may be readily repaired when either of the parts (body or back) become Worn or broken.

I lclaim as my invention-- I. A shuttle for narrow-fabric looms consistin g, in combination,of a body-section having spring-receiving chambers, and a backsection formed with a rack and with odset guide-ribs that lie within the outer lor rear face -of the said rack.

2. In combination, in a shuttle, a rack-section, and a bow-shaped body-sectionconsisting of a cast-metal shell having spring-receiving chambers and bridges d4, a5 and a7, lsubstantially as specied.

8. In combination, in a shuttle, a bowshaped body-sectionconsisting of a cast-metal EDWIN OLDFIELD.

Witnesses:

FRANK II. ALLEN, ALONZO M. LUTHER. 

